Income Taxes Federal Statutory Rate Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	35.00%	35.00%	35.00%
State income taxes, net of federal income tax benefit	3.30%	2.50%	2.10%
Non-deductible expenses	0.70%	2.00%	0.30%
Domestic manufacturing deduction	(1.40%)	(1.30%)	(0.00%)
Unrecognized tax benefits	0.50%	0.80%	1.30%
Valuation allowance	0.50%	0.50%	0.00%
Other	(1.60%)	(1.00%)	(0.40%)
Total	37.00%	38.50%	38.30%
Unrecognized tax benefits that would impact effective tax rate	$ 9.7	$ 8.7	$ 6.9